Massage mat



FIG. 1 is a top front perspective view of a massage mat;

FIG. 2 is a top elevation view thereof;

FIG. 3 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 4 is a right elevation view thereof, the left elevation view being a mirror image thereof; and,

FIG. 5 is a bottom elevation view thereof.

The broken lines shown in the drawings depict portions of the massage mat that form no part of the claimed invention. 

CLAIM The ornamental design for a massage mat, as shown and described. 